Pipe spinner



R. CARSON PIPE SPINNER Sept. 19, 1950 3 Sheets-Sheet l Filed Dec. 23, 1946 INVENTOR.

foj C arson ATTDRN EYS Sept. 19, 1950 R. CARSON 2,523,193

PIPE SPINNER Filed Dec. 23, 1946 3 Sheets-Sheet 2 wf f 2 :l u 'A n S I 312 l lo /l /Z l I INVENTOR f Roy Carson B 7 B' ATTCI R N EYB Sept. 19, 1950 Filed Deo. 25, 1946 R. CARSON PIPE SPINNER 3 Sheets-Sheet 3 im. j In. l/

i? 35 1w@ @a Il INVENZIOR.

Roy Crzson ATTE! R N EYS Patented Sept. 19, 1950 UNITED STATES PATENTy VQFFICE Y 2,523,193 vPIPE SPINNER Roy Carson,- Holliday, Tex. Application December 23, 1946, Serial No. 718,055

(Cl. Z55-3,5)

sition, for screwing the upper pipe section into a lower pipe-section, and the rotary operating mechanism is vertically adjustable for adaptation to equipment of varying heights or dimens1ons.

The primary object of the invention is the'4 provision of a power operated machine of this type that is composed of a minimum number of standardized parts that may with facility be manufactured, and assembled with conveniencemzo to insure an easily controlled and manually op' erated gripping'action of rotary rollers on the pipe for turning the pipe, together with simplied releasing means that permit the required descending movement of the pipe, or other equip- 1 ment.

Means are provided for reversing the movement of the rotary gripping rollers from a right hand screw threading action to a left-hand unscrewing action for a pipe section, thus readily adapt-,

ing the machine for use in fishing operations, recovery of lost tools, and other incidental operations required in well drilling processes. While the machine of my invention is adapted for use in frictionally gripping yand rotating the usualg drill rods, spindles, tubes, and other similar parts, of various sizes or diameters, for convenience of illustration and description I have disclosed in the drawings and described a pipe that may with safety and convenience be turned for threading purposes. v

The invention consists in certain novel features of construction and combinations and arrangements of parts as will hereinafter be described, and more specifically set forth in the,j

appended claim.

In the accompanying drawings I have illustrated one complete example' of a physical embodiment of my invention wherein the parts are combined and arranged in accord with one mode I have devised for the practical application of the principles of my invention. It will however, be understood that changes and alterations may be made, and are contemplated, in these eXemplifying drawings and mechanical structures, with-k in the scope of my claim, without departing from the principles of the invention.

Figure 1 is a top plan view of the swiveled portion of a machine embodying my invention, the motor connections being omitted for convenience in illustration, and4 showing the power I operated gripping rollers and the manually controlled presser roller in their relation to a pipe that is shown in cross section.

Figure 2 is a vertical longitudinal sectional view as at line 2 2 ofFig.v 1.

Figure 3 is a vertical-sectional view of the power y take off mechanism and reversible drive for the endless drive chainvof the gripping rollers, showing also a portion of themotor, and the gear shift mechanism.

Fig-ure 4 is a horizontal sectional view as at line 4 4 of Fig. 3. I

Figure 5 is a view in elevation of the base and swivel joint of the machine, with a vertical transverse sectional view at line 5 5 vof Fig. 1 through the swiveled housing of the machine.

Figure 6 is an enlarged detail sectional view, at line 6 6 of Fig. 3k showing the selective retaining devices for the gear shift lever of the rotary reversing drive.

Figure7 is an enlarged transverse vertical sec- 1 tional view at line 'I 'I of Fig. 3 of the means for mounting the gear shift lever on the re- .versible drive shaft. l,

Figure 8 is an enlarged vertical sectional view, i as at line 8 8 of Fig. 2.showing the adjustable guide sprocket or endless chain together; and Figure 9 is a, transverse vertical sectional view at line 9 3 of Fig..1 of the' manually controlled presser mechanism.-

In carrying out myI invention I utilize a base or bed plate B, upon which a suitable motor M is supported to revolve,the horizontally disposed drive shaft Ithat is journaled to revolve and slide in bearings 2, 2, ofthe hollow basteA or housing 3,

with means for transmitting powerto the upright driving shaft orA sprocket shaft 4 that is journaled in bearingsy 5, 5, of an upright sleeve 5 forming a fixed,bearing..head and a at horizontal attaching flange 1, that is rigidly bolted on the top of thehollow base 3.

Transmission of `:poweris controlled, and may be reversed by operation of a manual lever or shift lever 8 which is pivotally connected with the collar 9 by trunnions or pins 9a,.and the collar 9 is thus loosely mounted lonthe shaft, between fixed and spaced collars 9b, and adapted to longitudinally shift the shaftin its bearings. The lower end of theshift leverfis pivoted at IIlona bracket that is-rigid with the hollow base 3, and

`the shifting movement ofthe levercontrols a pair of spacedA bevelgears or pinions II and I2 pinned to the shiftable lshaft and located in the` an open bottom portion, and of suitable length to permit necessary adjustment of the rotary grippers of the machine to the pipe section. P. This tubular arm, housing, or chain-guard is adapted to be swung manually in a horizontal plane transversely of the upright pipe,y and for this purpose the housing at its inner end 'is A equipped with a. swivel-head I1 and braced attaching plate I8, the cylindrical head I1 being rotatably journaled or swiveled on the fixed cylindrical sleeve or bearing 6.

a Within the swivel end of the chain-guard a driving sprocket i9 isy rigidly mounted upon the upper end of the upright sprocket shaft 4, to actuate an endles drive. chain '20 that is enclosed and guarded within the. tubular housing Hi,l and Hat its outer, free end, the chain guard or varm terminates in an lenlarged hollow vhead 2| in which arejournaled two spaced uprightl stud shafts 22 and 23 in bearings 24. The endless chain extends throughout the length of the tubular chain-guardand the outer end of the chain is looped around two sprocket wheels 25 and 26 of shafts' 22 andv 23 respectively to revolve the sprooketsand shafts simultaneously in the same direction.

.For properly tightening the chain upon the two driven sprockets, and for maintaining the moving ights of the chain in proper relation- ',ship, an adjustable guide sprocket or idler I21,

as best seen in Fig.. 8', isprovided for the chain. The sprocket wheel 21 is rigidly mountedl upon an upright stud shaft 28 at one side of a chain flight, 'anda slotted bearing 28a extending transversely of the chain isv provided for the stud shaft inr order that .the shaftrand its sprocketY may be adjusted towardv and away from lthe chain, and secured in adjusted position by Aa lock bolt 21a threaded on the upper projecting end of the stud shaft.

For gripping and .rotating the pipe P two friction rollers 29 and 31')I are rigidly mounted on to revolve with the 'respective shafts 22 and 23, Within the hollow head 2|, and these two rollers revolving in the same `direction are provided with suitable,.exterior friction means, as cross ribs and Vgrooves onV their peripheries for gripping the exterior periphery o1' the pipe VP, but it lwill be understood that any other appropriate friction means may be employed to enhance the gripping action of the rollers in turning the pipe, or other equipment..

, In use,` the revolvinggrippers or rollers` are held against one side of the pipe by pressure vapplied to the swivelednohain guard, to turn the pipe, and manually controlled pressure is applied guide roller 31 that is jurnaled at 38, and the power of the manually operated pressure lever is applied to the lever arm through the roller 31 to the walls ofa slot 39 of the lever arm 33.

By this slotted arrangement and roller of the lever mechanism the holding or pressure roller 3| may be adjusted to varying diameters of pipe sections to be turned, and the operator may bear against or push against the lever 35 to apply the desired pressure against the pipe P. The operator, standing in position for a push against the lever, is .also in position to push or bear againsty the head of the chain guard, thus clamping the three rollers in gripping relation on the pipe to turn the latter. By manipulating Athe `hand lever 35 to apply and release the gripping pressure the operator control both the rotary Vvmovement of the pipe, as well as the vertical movement due to screw threading action.

The two gripping rollers and the presser roller provide a three-point application of power to thepipe which not only stabilizes the uipright position of the pipe section with relation to the next lower section, but this multiple grip in addition facilitates the screw-threading operation by maintaining the pipe P on its axial center.

The operation of theendless chain drive is conveniently controlledby the Liever 8, and when necessary or desirable the direction of rotation of the gripper rollers may be reversed with smoothness by manipulation of the lever 8 to change the grippers from a right-hand movement to a left-hand movement.

The swiveled chain-guard or pivoted beam I6 permits ready adjustment of the head 2i' and the gripping rollers, in applying the roilers to and withdrawing them from the pipe, and the lever actuated holding or pressing device is readily adjustable to permit adjustment of the rolllers; andthe chain-guard with the gripping rollers may be swung entirely` away from the pipe,L when not required for use.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

The combination with a base, a tubular arm swiveled on the base and 'a head on the free end of the arm, an endlessr drive chain mounted in the arm, and operating means therefor, `of a pair of shafts journaled in the head and sprocket wheels on said shafts co-acting with the chain, a laterally arranged guide sprocket adjustably mounted in the arm for co-action with the chain, a holder pivotally mounted on the arm and a friction roller journaled lin the holder in opposition to said head, a pair of gripping rollers mounted on the shafts within the head, and an actuating lever pivoted on the tub'ular arm for l pressing the holder and its roller into co-action at a diametricallyopposite,point of the pipe to hold the grippers in operative position.

For this purpose a comparatively small pres- .sure roller 3l, .which bears against the pipe, is

,journaled at 32 in the free end of a forked lever arm 33 which is pivoted on a vertical axis at 34 on the top ofthe Vchain-guard near the hollow fhead of the guard. Thel lever arm is actuated by ."`35a of. the lever 35 has journaled in its end'a with the gripping rollers.

a ROY CARSON. REFERENCES C'ITED The following references are ofreoord in the file of this patent:

UNITED 4STATES PATENTS 

